/* 新增：禁止页面滚动样式 */
body.loading-no-scroll {
    overflow: hidden !important;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* 确保加载遮罩层在最上层 */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.8s ease-in-out;
}

#loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

#loading-iframe {
    width: 100%;
    height: 100%;
    border: none;
}